<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>

<script>
    for(var i=1;i<=100;i=i+2){
        document.write(i+"<br>");
    }
</script>
</html>